Reduction of Physiological Metric Error Due to Inertial Cadence
First Claim
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1. A heart rate monitor comprising:
- a step rate sensor;
a step rate processor configured to compute a step rate of a user based on a first waveform provided by the step rate sensor;
a heart rate sensor;
a heart rate processor configured to compute a first heart rate of the user based on a second waveform provided by the heart rate sensor; and
a noise processor configured to;
compute a difference between the step rate and the first heart rate;
compute a second heart rate as a function of the difference; and
output the second heart rate.
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Abstract
The heart rate monitor disclosed herein removes a step rate component from a measured heart rate by using one or more filtering techniques when the step rate is close to the heart rate. In general, a difference between the step rate and the heart rate is determined, and the step rate is filtered from the heart rate based on a function of the difference.
51 Citations
45 Claims
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1. A heart rate monitor comprising:
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a step rate sensor; a step rate processor configured to compute a step rate of a user based on a first waveform provided by the step rate sensor; a heart rate sensor; a heart rate processor configured to compute a first heart rate of the user based on a second waveform provided by the heart rate sensor; and a noise processor configured to; compute a difference between the step rate and the first heart rate; compute a second heart rate as a function of the difference; and output the second heart rate.
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2. A method of reducing noise in data output by a physiological monitor, the method comprising:
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computing an inertial cadence of a user based on an inertial waveform provided by an inertial sensor in the physiological monitor; computing a first physiological metric of the user based on a physiological waveform provided by a physiological sensor in the physiological monitor; computing a difference between the inertial cadence and the first physiological metric; computing a second physiological metric as a function of the difference; and outputting the second physiological metric. - View Dependent Claims (3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
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24. A physiological monitor comprising:
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an inertial sensor; an inertial processor configured to compute a inertial cadence of a user based on an inertial waveform provided by the inertial sensor; a physiological sensor; a physiological processor configured to compute a first physiological metric of the user based on a physiological waveform provided by the physiological sensor; and a noise processor configured to; compute a difference between the inertial cadence and the first physiological metric; compute a second physiological metric as a function of the difference; and output the second physiological metric. - View Dependent Claims (25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45)
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Specification